Year | Value | 2023 | 364,646 | 2022 | 354,934 | 2021 | 343,253 | 2020 | 329,965 | 2019 | 317,241 | 2018 | 306,245 | 2017 | 298,144 | 2016 | 293,857 | 2015 | 293,420 | 2014 | 295,980 | 2013 | 300,205 | 2012 | 304,614 | 2011 | 308,076 | 2010 | 310,486 | 2009 | 312,661 | 2008 | 312,013 | 2007 | 311,816 | 2006 | 315,317 | 2005 | 318,545 | 2004 | 319,874 | 2003 | 317,534 | 2002 | 310,474 | 2001 | 298,104 | 2000 | 280,812 | 1999 | 260,623 | 1998 | 238,623 | 1997 | 216,607 | 1996 | 197,190 | 1995 | 180,318 | 1994 | 165,483 | 1993 | 154,323 | 1992 | 145,331 | 1991 | 134,254 | 1990 | 120,142 | 1989 | 104,981 | 1988 | 91,215 | 1987 | 82,057 | 1986 | 81,942 | 1985 | 92,274 | 1984 | 110,812 | 1983 | 133,414 | 1982 | 155,225 | 1981 | 171,828 | 1980 | 181,653 | 1979 | 185,295 | 1978 | 182,069 | 1977 | 174,251 | 1976 | 165,514 | 1975 | 158,076 | 1974 | 153,617 |
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